Floribunda shrub rose plant named ‘ALTgoldice’

ABSTRACT

A new and distinct floribunda Rosa cultivar named ‘ALTgoldice’ is disclosed, characterized by distinctive fully double golden yellow flowers with a strong, sweet fragrance. Plants are vigorous and can be grown on their own roots. Plants are dense, flower continuously and exhibit good resistance to blackspot diseases. The new variety is a Rosa, normally produced as an outdoor garden or container plant.

Latin name of the genus and species: Rosa hybrida.

Variety denomination: ‘ALTgoldice’.

BACKGROUND OF THE INVENTION

The new Rosa cultivar is a product of a planned breeding programconducted by the inventor, Peter Ping Lim. The objective of the breedingprogram was to produce vigorous new garden hybrid tea rose varieties forornamental commercial applications. The cross resulting in this newvariety was made during May of 2013.

The seed parent is the variety Rosa ‘WEKvossutono’, U.S. Plant Pat. No.18,473. The pollen parent is the variety Rosa ‘JACink’, U.S. Plant Pat.No. 4,089. The new variety was selected in 2014 by the inventor in agroup of seedlings resulting from the 2013 crossing, in a nursery inVista, Calif.

At the time of this filing plants of ‘ALTgoldice’ have not been publiclyreleased. The first sale is scheduled for March of 2019 in the UnitedStates. Information about the new variety was published in American RoseMagazine October of 2017. This publication, however, was not accompaniedby any public access to plant material.

Asexual reproduction of the new cultivar has been achieved by vegetativecuttings. This was first performed at a research greenhouse in in Vista,Calif. in June 2014 and has shown that the unique features of thiscultivar are stable and reproduced true to type in more than 5successive generations.

SUMMARY OF THE INVENTION

The cultivar ‘ALTgoldice’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, day length, and lightintensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘ALTgoldice’ These characteristics incombination distinguish ‘ALTgoldice’ as a new and distinct Rosacultivar:

-   -   1. Vigorous plants.    -   2. Golden yellow petal color.    -   3. Dark, glossy foliage.    -   4. Strong, sweet fragrance.    -   5. Floribunda shrub rose.

Plants of the new cultivar ‘ALTgoldice’ are similar to plants of theseed parent, in most horticultural characteristics, however, plants ofthe new cultivar ‘ALTgoldice’ differ in the following:

-   1. The new variety has less petals than the seed parent.-   2. Flower color of the new variety is brighter, deeper yellow than    the seed parent.-   3. Plants of the new variety are more vigorous than plants of the    seed parent.

Plants of the new cultivar ‘ALTgoldice’ are similar to plants of thepollen parent in most horticultural characteristics, however, plants ofthe new cultivar ‘ALTgoldice’ differs in the following;

-   1. The new variety has smaller petals than the pollen parent.-   2. Flower color of the new variety is golden yellow, the pollen    parent has a pink flower.

COMMERCIAL COMPARISON

Plants of the new cultivar ‘ALTgoldice’ can be compared to thecommercial variety Rosa ‘Flower Carpet Yellow’, U.S. Plant Pat. No.10,527. These varieties are similar in most horticulturalcharacteristics, however ‘ALTgoldice’ differs in the following:

-   1. The new variety has more petals per flower.-   2. This comparator has a later blooming flower cycle.-   3. Plants of this comparator are taller.

Plants of the new cultivar ‘ALTgoldice’ can also be compared to thevariety Rosa ‘MEISENTMIL’, U.S. Plant Pat. No. 20,635. These varietiesare similar in most horticultural characteristics, however ‘ALTgoldice’differs in the following:

-   1. The new variety has more petals per flower.-   3. This comparator has a flower with a white eye in the center,    ‘ALTgoldice’ is solid golden yellow.-   4. Plants of this comparator are lower growing, with a more    spreading branching habit.-   5. Flowers of this comparator are not fragrant, flowers of    ‘ALTgoldice’ are fragrant.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates in full color a close up of anindividual flower. The photograph was taken using conventionaltechniques and although colors may appear different from actual colorsdue to light reflectance it is as accurate as possible by conventionalphotographic techniques.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The RoyalHorticultural Society Colour Chart 2007 except where general terms ofordinary dictionary significance are used. The following observationsand measurements describe ‘ALTgoldice’ plants grown outdoors, in PalmDesert, Calif. The growing temperature ranged from approximately 10° C.to 38° C. during the day and from approximately 5° C. to 22° C. duringthe night. Measurements were taken in September. General lightconditions were very bright, normal sunlight. Measurements and numericalvalues represent averages of typical plant types.

-   Botanical classification: Rosa ‘ALTgoldice’.-   Market classification: Floribunda shrub rose.

PROPAGATION

-   Time to initiate roots: About 30 days at approximately 20° C.-   Time to produce a rooted cutting: About 55 days at approximately 20°    C.

PLANT

-   Age of plant described: Approximately 2 years.-   Growth habit: Compact spreading.-   Container size: 2 gallon.-   Height: 30 cm.-   Plant spread: 47 cm.-   Rootstock: Own root.-   Growth rate: Moderate.-   Branching characteristics: Sympodial branching.-   Length of primary lateral branches: 10 to 13 cm.-   Diameter of lateral branches: Approximately 5 mm.-   Quantity branches: About 5 main branches, 8 to 10 lateral branches    per main branch.-   Branches—young wood:    -   -   Diameter.—3 to 5 mm.        -   Texture.—Glabrous.        -   Approximately density/quantity of thorns.—Approximately 3            per linear cm.        -   Color.—Near RHS Green 138A.-   Branches—old wood:    -   -   Diameter.—1.5 to 2.0 cm.        -   Color.—Near RHS Greyed-Green 197B.        -   Texture.—Rough thick woody striations.        -   Thorns.—Approximately density/quantity of thorns: 3 to 5 per            linear cm. Color of thorns: Immature: RHS Yellow-Green 153D.            Mature: Near RHS Greyed-Orange 166B. Shape: Deltoid,            moderately hooked. Height: Average 4 mm. Diameter: Base near            4 mm. Tip near 2 mm.

FOLIAGE

-   Leaf:    -   -   Arrangement.—Alternate and compound.        -   Quantity.—Average 5 to 9 per main branch.        -   Internode.—Average range 1.3 to 4.0 cm.        -   Average length.—Approximately 9.0 cm.        -   Average width.—Approximately 6.5 cm.-   Rachis:    -   -   Average length.—Approximately 5 cm.        -   Average diameter.—Approximately 0.2 cm.        -   Color.—Near RHS Green 138A.        -   Texture.—Glabrous all surfaces.-   Leaflet:    -   -   Quantity.—5 per leaf.        -   Average length.—Approximately 4.0 cm.        -   Average width.—Approximately 3.0 cm.        -   Shape of blade.—Ovate.        -   Apex.—Acute.        -   Base.—Rounded.        -   Margin.—Serrate.        -   Appearance of top surface.—Very glossy.        -   Appearance of bottom surface.—Matte.        -   Texture of top surface.—Glabrous.        -   Texture of bottom surface.—Glabrous.        -   Color.—Young foliage upper side: Near RHS Green 139A. Young            foliage under side: Near RHS Green 137C. Mature foliage            upper side: Near RHS Green 139A. Mature foliage under side:            Near RHS Green 138A.        -   Venation.—Type: Reticulate. Venation color upper side: Near            RHS Green 137A. Venation color under side: Near RHS Green            138C.-   Petiole:    -   -   Average length.—Approximately 2.0 cm.        -   Average diameter.—Approximately 0.2 cm.        -   Color.—Near RHS Green 137C.        -   Texture.—Glabrous.

FLOWER

-   Natural flowering season: Spring until Autumn.-   Inflorescence type and habit: Single occurring, or sometimes 2,    fully double rotate flowers.-   Rate of flower opening: Approximately 4 days from bud to fully    opened flower.-   Flower longevity on plant: 10 to 14 days, after fully opened.-   Quantity of flowers: 8 to 10 fully opened flowers and buds.-   Flower size:    -   -   Diameter.—Approximately 7 cm.        -   Height.—Approximately 3 cm.-   Peduncle:    -   -   Length.—3.5 cm.        -   Diameter.—0.35 cm.        -   Color.—Near RHS Green 143B.-   Petals:    -   -   Petal arrangement.—Multiple rotate, overlapping whorls.        -   Petal quantity.—Approximately 20.        -   Length.—Average 3 cm.        -   Width.—Average 2.5 cm.        -   Shape.—Somewhat broad ovate to broad deltate.        -   Margin.—Entire.        -   Apex.—Rounded, sometimes acute.        -   Base.—Broad attenuate.        -   Texture.—Glabrous all surfaces.-   Color: Petals.    -   -   When opening.—Upper surface: Near RHS Yellow 5B. Lower            surface: Near RHS Yellow 10C.        -   Fully opened.—Upper surface: Near RHS Yellow 6B. Lower            surface: Near RHS Yellow 6C.        -   Fading.—Upper surface: Near RHS Yellow 6C, 10D at base.            Lower surface: Near RHS Yellow 10D.-   Bud:    -   -   Shape.—Ovate.        -   Length.—Approximately 2 cm.        -   Diameter.—Approximately 1.5 cm.        -   Color.—Near RHS Yellow 6C.-   Sepals:    -   -   Quantity.—5.        -   Length.—1.7 to 2.1 cm.        -   Width.—6 mm.        -   Shape.—Narrow.        -   Apex.—Apiculate.        -   Margin.—Entire.        -   Color.—Interior Surface: Near RHS Green 138C. Exterior            Surface: Near RHS Green 138A.        -   Texture.—Densely and minutely pubescent upper and lower            surfaces.-   Receptacle:    -   -   Length.—1.0 cm.        -   Width.—1.1 cm.        -   Shape.—Flattened dome.        -   Color.—Near RHS Green 138A.-   Fragrance: Strong, sweet fragrance.

REPRODUCTIVE ORGANS

-   Stamens:    -   -   Quantity.—Approximately 50 to 60.        -   Filament length.—Approximately 1.1 cm.        -   Filament color.—Near RHS Yellow 10D.-   Anthers:    -   -   Length.—0.2 cm.        -   Shape.—Narrow globular.        -   Color.—Near RHS Yellow-Orange 15C.        -   Pollen.—Color: RHS Greyed-Orange N170A. Quantity: Scant.-   Pistil:    -   -   Length.—Approximately 1.3 cm.        -   Style.—Length: Approximately 0.4 cm. Color: Near RHS Yellow            2D.        -   Stigma.—Shape: Linear. Color: Near RHS Yellow 2D. Ovary            color: Near RHS Green 138B. Ovary shape: Oblong. Ovary            length: Average 5 mm. Ovary diameter: Average 0.2 cm.

OTHER CHARACTERISTICS

-   Seeds and fruits: Not observed.-   Disease/pest resistance: Good overall disease resistance to normal    pests and diseases typical of garden roses. Very good resistance to    blackspot diseases.

What is claimed is:
 1. A new and distinct floribunda shrub rose plantnamed ‘ALTgoldice’ as herein illustrated and described.